Heating-stove.



S. A. JOHNSON.

HEATING STOVE. APPLICATION FILED APR.13. 1909.

Patented Mar. 14, 1911.

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S. A. JOHNSON.

HEATING STOVE.

APPLICATION FILED 1911.13. 1909.

986,922, Patented Mar. 14, 1911.

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Unrrn SAMUEL A. JOHNSON, F TUSKEGEE, ALABAMA.

HEATING-STOVE.

.b all whom it may concern:

Be it known that I, SAMUEL A. JOHNSON, a citizen of the United States,residing at Tuskegee, in thecounty of Macon and State of Alabama, haveinvented new and useful Improvements in Heating-Stoves, of which thefollowing is a specification.

This invention relates to heating stoves, and has for an object toprovide a stove with a fire box, and a dome disposed above the lire boxand engaged therewith and provided at its upper end with a dischargepassage for receiving the waste products of combustion and dischargingthem downwardly between the walls of the drum of the stove, thusutilizing in an effective manner the waste heat which is commonlydischarged from the fire box upwardly in a direct vertical line into theusual stack or chimney.

Other objects and advantages will be apparent as the nature of theinvention is better set forth, and it will be understood that changeswithin the scope of the claim may be resorted to without departing fromthe spirit of the invention.

In the drawings, forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several views:*--Figure 1 is a vertical section through the stove. Fig. 2 is a detailsection showing the manner of connecting the head portions of the heatducts. Fig. 3 :is a detail vertical section through a portion of thefire box and a portion of the dome showing the manner of connecting thetwo together. Fig. 1 is a rear elevation of the fire box, the dome, andthe heat ducts showing the manner of connecting the said ducts to thedischarge pipe. Fig. 5 is a detail horizontal section taken on the line55 of Fig. 4. Fig. 6 is a detail pers )ective view of one of the heatducts. Fig. is a detail perspective view of the discharge pipe. Fig. 8is a detail front elevation of a portion of the drum showing the firedoor. Fig. 9 is a detail section taken on the line 9-9 of Fig. 8.

Referring now more particularly to the drawings, there is shown a stovewhich comprises preferably a vertically disposed cylindrical drum 1having a removable cap 2 at the upper end and provided with a closedbottom 3. The drum 1 carries a suitable form of grate 4 which isdisposed in spaced relation to the bottom 3 so as to form heSpecification of Letters Patent.

Application filed April 13, 1909.

Patented Mar. 14, 1911.

Serial No. 489,603.

tween the bottom and the said grate an ashpit 5. drum 1 and has itswalls disposed in spaced relation thereto, and as shown the lower end ofsaid fire box is disposed immediately above the grate 4. The lire boxhas formed therein a fuel receiving opening 7 disposed in line with thefire door 8 carried by the drum 1. To prevent the products of combustion escaping from the box 6 into the drum by way of the opening 7 Iprovide the box (3 with a rectangular flange 9 which entirely surroundsthe opening 7 and is extended at its front end to the walls of the drumat the front of the latter. The box 6 is provided with an annularenlarge ment 10 at the upper end thereof which is rabbeted as shown at11 to receive the lower end of a dome 12 provided at its upper end witha discharge passage 13. I preferably secure the dome to the fire box 6by means of rivets 14 but it is obvious that any other suitablefastening means can be employed.

Ileat receiving ducts 15 and 16 are employed and each consistspreferably of a downwardly extending leg 17 of concavoconvex formadapted to lie at the sides of the dome 12 and to be secured thereto byengaging the flanges 18 and with the said dome suitable fasteningdevices 19. The said heat ducts are provided with right angularlyextending upper end portions or heads 20 which are disposed immediatelyabove the discharge passage 13 and in spaced relation thereto. At thelower ends of the legs 17 extend arcuate horizontal portions 21 ofconcave-convex form, and these portions are arranged to con'nnunicatewith each other so as to establish communication between both ducts atthe sides of the dome. The portions 21 extend partly around the dome andare each provided with a passage 22. A discharge pipe 23 is provided andcarries at its lower end a horizontal portion 24 having right angularlyextending end portions 25 to fit in the passage 29. formed in the saidportions 21. of the heat ducts. Adjacent to the upper end of the drumand at a point slightly below the upper extremities of the heat ducts isformed a plurality of slots 26 to more effectively permit the es cape ofheat from the drum. These slots are preferablyarranged in an annularseries, but it is obvious that they can be arranged in a manner thatwill best suit the requirement. The drum 1 is provided adjacent to Afire box 6 is located within the the lower end thereof with a suitablefoot rail 27. The discharge pipe 23 is disposed partly within the drum 1and at its upper extremity extends through a passage 27 .ormed in thedrum and is connected to a pipe or chimney 28.

In operation, fuel is fed into the fire box as is customary in stoves ofthe character similar to the one herein described, and as the productsof combustion and smoke rise from the fire they will travel upwardly inthe direction of the arrows indicated in Fig. 1 of the drawings anddischarged from the passage 13 into the ducts 15 and 16. The products ofcombustion and smoke will then take a downward. course then an annularcourse by its travel through the portions 21 and then finally dischargedinto the pipe 23.

I claim A stove comprising a casing, a fire-pot located therein andhaving its walls spaced from the walls of the casing, a grate locatedabove the bottom of the casing and closing the bottom of the fire-pot, asubstantially dome-like member extending upwardly from the fire-pot andprovided with an upper open end portion, the said casing having passagesformed therein near its top and substantially on a line with the upperopen end of the dome, ducts secured to the dome 30 and extendingupwardly thereon from the bottom of the dome and having interlockingcap-forming portions at the top of the dome and in spaced relation tothe upper open end. thereof, the said ducts having horizontal lowerportions extending partly around the dome and each formed adjacent toits end with an opening and a discharge pipe extending upwardly from thesaid horizontal portions of the ducts and formed at its lower end with ahorizontal portion having its end portions fitting the passages in thesaid horizontal portions of the ducts, the said discharge pipe havingits upper end extending through the casing at a point immediately abovethe passages therein.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL A. JOHNSON. lVitnesses J. ALEX. Manny, JNo. N. TI-roMrsox.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

